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BFI to EAS: distance & flight time
Seattle (Boeing Field King County International Airport) → San Sebastian (San Sebastian Airport)
5,189 mi
8,351 km · 4,509 nm
10h 38m
estimated nonstop flight time
+9h
time difference · heading northeast
See live BFI→EAS fares Phone-only fares on this route — call free
Flight time details
5,189 miles nonstop takes roughly 10h 38m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 9-hour time gain when reading arrival times on your ticket.
The two airports
- BFI — Boeing Field King County International Airport · Seattle, United States
- EAS — San Sebastian Airport · San Sebastian, Spain
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near BFI
- SEA · Seattle Tacoma International Airport6 mi away
- RNT · Renton Municipal Airport5 mi away
- PWT · Bremerton National Airport22 mi away
- TIW · Tacoma Narrows Airport22 mi away
Near EAS
- BIQ · Biarritz-Anglet-Bayonne Airport15 mi away
- PNA · Pamplona Airport41 mi away
- BIO · Bilbao Airport56 mi away
- VIT · Vitoria/Foronda Airport57 mi away
Frequently asked questions
How far is BFI from EAS?
The flight distance from Seattle (BFI) to San Sebastian (EAS) is 5,189 miles (8,351 km, 4,509 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from BFI to EAS?
A nonstop flight takes about 10h 38m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Seattle and San Sebastian?
San Sebastian is 9 hours ahead of Seattle.
What is the cheapest way to fly from BFI to EAS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BFI–EAS that never appear on search engines, with no booking fees.